Why She’s a Babe: Because Kimiko came out of a 12-year retirement from tennis last year to compete again professionally. And at 38 years old, she’s typically playing opponents half her age. At 5’4″, 117 lbs.–of compact, tightly-ripped muscle–she’s also taking on players who are way bigger and faster than they were back in her day. That takes–no pun intended–balls. And ballsy play–even when you lose in the first round of Wimbledon–is hot.